[rescue] Blocked via dsbl.org Phil...

Dave McGuire mcguire at neurotica.com
Thu Feb 19 18:23:58 CST 2004

On Feb 19, 2004, at 6:27 PM, Janet L. Campbell wrote:
>>    What??  How in hell would an MTA do an MX lookup for something like
>> that?
> First of all, this is not new.  It's been around for quite some time 
> (10+
> years), though standards lagged in including it as mandatory.  RFC2821
> from 2001 finally includes it.

   Ugh.  Ok, I feel stupid now. :)

> The lookup is bypassed, as you would expect.  Being able to specify the
> address "manually" is actually quite handy during debugging.  It allows
> you to test without involving DNS, which not only lets you easily test
> when DNS is nonfunctional or incorrect, but it lets you test mail 
> delivery
> on specific mail exchangers when there are multiple MX records for an
> address.

   That makes sense...but it leaves one with very little control of mail 
routing, and gives spammers yet one more thing to abuse. :-(


Dave McGuire                      "My tummy hurts now, but my soul
Cape Coral, FL                   feels a little better."     -Ed

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